Let me clarify. If he was merely hanging on and compiling, I would have assigned those seasons a "0." Like Kurri in Colorado. But he was an absolute cancer. He destroyed those two teams. Hence the "-"s.
I can't speak for the very angry Canucks fans, but the Rangers were already thoroughly destroyed by the time Messier came back. He failed to elevate an awful group of veterans playing out the string with no farm system to speak of. I don't know why he should've been expected to do so in his age 40 to 43 seasons. Seriously take a look at those Rangers teams. You had:
Brian Leetch still a very effective offensive player, but not capable of carrying the load on the blue line.
Inconsistent talents in Nedved, Hlavac, Dvorak.
The tail ends of Theo Fleury, Eric Lindros, Pavel Bure. We got brief glimpses of who they used to be in between injuries and inconsistent play.
A young flash in the pan in Mike York. Tomas Kloucek appeared to be a talented young defender before injuries derailed his career. And who can forget mega-bust Jamie Lundmark who (along with legend Pavel Brendl) was the return on a 1999 trade of a young center named Marc Savard. I wonder what became of him? Oh and Jed Ortmeyer. Ranger fans like him because he actually tried hard, which was a unique trait on those rosters.
Expensive mercenaries Bobby Holik and Darius Kasparaitis did exactly what you'd expect when asked to fill far larger roles than they were capable of.
The immortal Dale Purinton played 40+ games in every single season of Messier, part II. He then fortunately disappeared, never to be heard from again.
Now I'm sure there was a bit of a country club atmosphere on those rosters and I'm sure Messier at least partially contributed to it, but he was rejoining a team that had already missed the playoffs three years in a row and that had actually already doomed itself before he left the first time. Sather's pre-lockout years continued a downward trend, but Neil Smith is the man who engineered the dark ages, arguably starting with moves made before the Rangers even won in 94. I blame this series of trades (you can argue the first two were necessary to win the Cup, although I happen to believe they're part of the reason the Rangers struggled so much in the later rounds):
March 17, 1993:
Doug Weight traded to Edmonton by NY Rangers for Esa Tikkanen, March 17, 1993.
March 21, 1994:
Tony Amonte traded to Chicago by NY Rangers with the rights to Matt Oates for Stephane Matteau and Brian Noonan, March 21, 1994.
August 31, 1995:
Sergei Zubov traded to Pittsburgh by NY Rangers with Petr Nedved for Luc Robitaille and Ulf Samuelsson, August 31, 1995.
March 14, 1996:
Mattias Norstrom traded to Los Angeles by NY Rangers with Ray Ferraro, Ian Laperriere, Nathan Lafayette and NY Rangers' 4th round choice (Sean Blanchard) in 1997 Entry Draft for Marty McSorley, Jari Kurri and Shane Churla, March 14, 1996.
November 25, 1998:
Alexei Kovalev traded to Pittsburgh by NY Rangers with Harry York for Petr Nedved, Chris Tamer and Sean Pronger, November 25, 1998.
June 26, 1999:
Marc Savard traded to Calgary by NY Rangers with NY Rangers 1st round choice (Oleg Saprykin) in 1999 Entry Draft for the rights to Jan Hlavac and Calgary's 1st (Jamie Lundmark) and 3rd (later traded back to Calgary - Calgary selected Craig Andersson) round choices in 1999 Entry Draft, June 26, 1999.
Also, the Rangers had no goaltending whatsoever after injuries caused Richter's deterioration.